Looks like quite the difference. Did you notice any differences with the cars performance?

Yeah for sure. I had rough idles when I was stopped - those are non existent now. Also, when I was switching from 3rd to 4th, 4th would feel a little rough at low RPMs - now it just feels so much smoother.

Pretty incredible that BMW released an engine with a problem this bad, refuses to publicly acknowledge that it's an issue, won't cover it under warranty, and then allows dealers to charge $1,000+ for the cleaning.

Re: Pretty incredible that BMW released an engine with a problem this bad, refuses to publicly acknowledge that it's an issue, won't cover it under warranty, and then allows dealers to charge $1,000+ for the cleaning.

My first BMW car - a '78 530i required the walnut shell blasting for the same
reasons noted above.

My car idles like crap most of the time. On a couple of occasions I've left the car running while going in to a store or the house and I'd come back out and the car would be misfiring and chugging - one time throwing a code that went away on restart . I'm under warranty and going to see if they'll perform this procedure for me next time I'm at the dealer.

Hello everyone! I wanted to post a few pictures of the intake valves from a N55 with 60k~ on it since there aren't many pictures of N55 valves here. You can see the build up is significantly less than what the N54s do.

This car was driven mostly highway. Hope this gives N55ers a good idea on what yours could look like.

Hello everyone! I wanted to post a few pictures of the intake valves from a N55 with 60k~ on it since there aren't many pictures of N55 valves here. You can see the build up is significantly less than what the N54s do.

This car was driven mostly highway. Hope this gives N55ers a good idea on what yours could look like.